Five practical steps to actually reduce unwanted calls

People ask us all the time: how do I actually reduce the number of unwanted calls I get? The honest answer is that there is no single setting that ends them — spam is an arms race, not a fixable bug. But a handful of small moves, done once, compound quickly. After a few weeks, the ringer gets noticeably quieter.

Here are the five we recommend in order of effort-to-reward.

1. Silence unknown callers (the single best setting on your phone)

Both iOS and Android ship with a feature that sends calls from numbers not in your contacts directly to voicemail, without ringing the phone. Legitimate callers — the dentist, the delivery driver, a new acquaintance — almost always leave a message or try again. Spammers almost never do.

On iOS: Settings → Phone → Silence Unknown Callers. On Android: the equivalent lives under Phone app → Settings → Spam and Call Screen (the exact path varies by manufacturer).

This one setting eliminates more noise than anything else on this list.

2. Register with your national Do Not Call list

Do Not Call registries do not stop scammers — scammers ignore the list by definition. What they do stop is legitimate telemarketers, who are legally bound to honor the list and who represent a surprising share of unwanted calls in most countries.

In the US, it is donotcall.gov. In the UK, it is the TPS (Telephone Preference Service). Most other countries have an equivalent; a quick search for your country plus "do not call registry" will find it. Registration is free and lasts indefinitely.

3. Turn on your carrier's spam filter

Most major carriers now run their own spam filtering at the network level — before the call ever reaches your phone. Some enable it by default, some require you to opt in, and some charge for the advanced tier. Worth checking:

• On the major US carriers, look for "Scam Shield", "Call Filter", or "Call Protect" in your carrier's app.
• On European carriers, it is often labelled "premium filtering" or bundled into the security add-on.

These filters are imperfect — they occasionally block real calls, which is why Silence Unknown Callers (step 1) is a good belt-and-braces layer on top.

4. Stop feeding the list

The reason your number ends up on spam lists is that, at some point, someone sold it. Some common leaks:

• Loyalty programs that ask for a phone number at checkout. You rarely need to provide a real one.
• Free trial signups that demand a phone number "for verification". If the service works without one, skip it.
• Unsubscribed-but-not-really email senders who sell their bounce lists to data brokers.

You cannot retroactively scrub a leaked number. But you can slow the rate of new exposure.

5. Report. Consistently.

This one sounds softer than the others but matters more than people think. Every number you report — to your carrier, to your phone's built-in "Report Junk" button, to a community service like ours — feeds a feedback loop that makes the next person's filter smarter.

Spam filtering is essentially a classifier. Classifiers get better with data. The few seconds it takes to report a spam call does not help you, but it does help the next victim. And on the flip side, every time someone else does it for a number that later calls you, their work is what lets your filter catch it.

Setting expectations

After a month of doing the above, your call volume should be noticeably lower. It will not be zero. Spam never is. But you will spend much less mental energy on whether to answer, and the calls that get through will mostly be ones that deserve your attention.

That is the real win.